Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Circles are widely used standard grade filter papers for routine applications with medium retention and flow rates. X100 TYPE 1 38.5CM 100/PKFILTER CI

Recommended when fast filtration of a gelatinous precipitate for gravimetric analysis is performed on a strongly acidic or alkali solution. Whatman™ Quantitative Filter Paper: Grade 541 Circles  are acid hardened cellulose filters, which reduces ash to an extremely low level. X100 TYPE 541 32.0CM/100/PKFILTER

Retains and absorbs more than Grade 1 filters, with a corresponding increase in filtration time. Whatman™ Qualitative Filter Paper: Grade 2 Circles are used for monitoring specific contaminants in the atmosphere and in soil testing. X100 TYPE 2 50.0CM 100/PKFILTER CI

Filters fine particulates. X100 FILTER 113 DIA 135MM

Filters and retains course particles for monitoring air pollution. Whatman™ Qualitative Filter Paper: Grade 4 Circles are used when high flow rates in air pollution monitoring are required and the collection of fine particles is not critical. X100 FILTER PAPER GR 4 270MM

Used in analytical works in laboratories. Fisherbrand™ Grade 601 Cellulose General Purpose Filter Paper has medium filtration velocity. X100 discs of standard filter paper medium 55 mm

Manufactured under strictly controlled conditions. Whatman™ Cellulose Nitrate Membrane Filters have a noticeably improved flexibility and are made to tolerate abuse during handling, loading, and autoclaving without sacrificing integrity. X100 MBNE PROTRAN BA83 0,2µ 25MM

Use as a gravimetric filter during analysis of metals in acidic or alkaline solutions and in the collection of hydroxides. Whatman™ Quantitative Filter Paper: Grade 540 Circles acid-treated surface prevents tearing during filtration and allows the user to scrape precipitates from the paper. X100 FILTER PAPER GR. 540 185MM

Used for high precipitate capacity and increased wet strength. Whatman™ Qualitative Grade Plain Circles and Sheets - Grade 3 provide double the thickness of Whatman Grade 1. X100 FILTER PAPER GR3 460X570MM

Use for quantitative air pollution analysis as a paper tape for impregnation when determining gaseous compounds at high flow rates or for quantitative air pollution analysis. Whatman™ Quantitative Filter Paper: Grade 41 Circles are commonly used in preparing samples for metal analysis after nitric acid digestion. X100 GR. 41 4.25CM/100/PKFILTER

Maintains flow rate with reduced contact between filter and funnel. Whatman™Grade 2555½ Pleated Circles are medium fast filter papers used for the filtration of the mash for the determination of the extract in malt and wort and for removing carbon dioxide from beer. X100 FOLDED FILTERS 2555 1/2185 MM

Supports collection of coarse and gelatinous precipitates with minimal fiber shredding, even when wet. Whatman™ Grade 54 Quantitative Filter Paper has a hard, smooth surface to sustain vacuum and suction filtration. X100 TYPE 54 50.0CM/100/PKFILTER C

Dissolves residue-free in acid solution, which is critical in applications such as Kjeldahl analysis of nitrogen in soil. Whatman Kjeldahl Analysis Weighing Paper, Grade B-2 is thin, lightweight, and low in nitrogen for accurate chemical analysis. X500 KJELDAHL B2 B-2 12 INCH X 12 INCH (PACK OF500)

Retains the fine precipitates encountered in chemical analysis. Whatman™ Qualitative Filter Paper - Grade 5 Circles are excellent clarifying filters for cloudy suspensions and for water and soil analysis. X100 GR. 5 32.0CM 100/PKFILTER C

Supports accurate analysis in applications sensitive to very low levels of background contamination. Whatman™ Quantitative Filter Paper: Grade 40 Circles are additionally useful in gravimetric analysis where ash content might affect weight measurements of combusted samples. X100 FILTER PAPER GR. 40 240MM

Saves time required to fit circles into conical funnels. Whatman™ Grade 2V Folded Qualitative Filter Papers provide medium flow and nominal particle retention rating of 8µm at a higher filtration speed. X100 TYPE 2V 38.5CM/100/PKFOLDED F

Filters and retains extremely small particles. Whatman™ Quantitative Filter Paper: Grade 42 Circles are suitable for processes that require ashing. X100 GR. 42 32.0CM/100/PKFILTER

Enables strong retention for very fine crystalline precipitates. Whatman™ Quantitative Filter Paper: Grade 50 Circles withstand shredding, wet handling, and precipitate removal by scraping. X100 GR. 50 4.25CM/100/PKFILTER

For fast filtering of particulates. X100 FILTER 111 DIA 47MM

Covers a wide range of laboratory applications and is frequently used for clarifying liquids. Whatman™ Qualitative Filter Paper: Grade 1 Sheets are widely used standard grade filter paper for routine applications with medium retention and flow rates. X100 GR. 1 58 X 68cm/500

Fisherbrand™ Grade 115 Cellulose Very Slowly Filtering Qualitative Filter Paper are made of cellulose fibers. X100 FILTER 115 DIA 45MM

X100 GR 1 4.5CM 100/PK, 100/CS, MA: 1001-045

X100 ROUND FILTER, VARIETY: 1288, D = 41 MM

Provides medium retention and flow rate. Whatman™ Grade 1 Qualitative Filter Paper is frequently used in clarifying liquids, soil analysis and seed testing procedures. TYPE 1 47CMX100M FILTERREELS

Used in analytical works in laboratories. Fisherbrand™ Grade 601 Cellulose General Purpose Filter Paper has medium filtration velocity. FILTER 1 QL100 85MM FP=100

Enhance filtration speed by coagulating precipitates or suspensions to form thick retentive “prefilter” layer on top of normal filter paper. ASHLESS CLIPPINGS /500G

Used in many air sampling filter applications, including sampling of acidic gases, stacks, flues, and aerosols. Whatman™ Quartz Air Sampling Filters are sequentially numbered according to U.S. Environmental Protection Agency (EPA) standards and are suitable for most applications. X100 TYPE QMA FILT. / QUARTZ85MM/1

Captures tiny particles without becoming weak. Whatman™ Glass Microfiber Filter Paper Grade 6 may also be used for determination of filterable substances and residue upon ignition or analysis of aggressive media. X100 GLASS FIBER FILTER GF 6185 MM

X100 FILTER 1602/N 580X580MMStck.)

Enables high retention of fine particles in chemically harsh conditions. Whatman™ Quantitative Filter Papers: Grade 542 Circles are well suited for use in capturing fine precipitates in applications such as metal determinations and hydroxide collection. X100 FILTER PAPER GR. 542 70MM